The United States launched another round of airstrikes against an ISIS target in Iraq on Friday, U.S. officials told NBC News. According to officials, the strikes occurred on a target northwest of Erbil. The strikes came a day after they were threatened by President Barack Obama.

Earlier Friday, two 500 pound bombs were dropped by two Navy F-18 fighter jets near Erbil, the strategically important city that serves as the Kurdish capital, and where the United States has a consulate. ISIS was using the artillery to shell Kurdish forces defending Erbil, the Pentagon said.

The fighter jets took off from the aircraft carrier USS George H.W. Bush, in the Persian Gulf. After the first strike, the warplanes returned a short time later to hit the target a second time. The mission marked a return to U.S. military engagement in Iraq, three years after Obama removed U.S. forces.